I have just seen a phrase that seems not to be marked for translation:

"If you meant to test for equality, please use '=='"

this appears in the GUI in "/sample/restrict from criterion" when you use a unique '=' to define it.
Ignacio Díaz-Emparanza
Departamento de Métodos Cuantitativos
Universidad del País Vasco - Euskalherriko Unibertsitatea, UPV/EHU
Tfno: (+34) 94 601 3732